Thyme thrives best on dry meadows or on macchia, which means evergreen shrub formations in the summer-hot European Mediterranean region. Like many Mediterranean plants, thyme only needs a little water - waterlogging in particular can be dangerous.
Water regularly just after planting
Basically, garden thyme does not need to be watered at all; unless,
a) You just planted the plant or
b) it is very hot and dry for a long period of time.
Freshly planted thyme must first develop roots and literally dig themselves into the ground. Until the plant has literally taken root, it needs to be watered regularly - after that, no more. Planted thyme can usually take care of itself due to its very deep and widely branched roots. Only potted thyme should be watered, but must not stand damp. The right time to water has come when the top layer of soil has already dried well. You can avoid waterlogging by taking appropriate drainage measures.
tips and tricks
If possible, avoid watering thyme (and other plants) at midday, as this is when most of the water evaporates before the plant can absorb it.